Throughout the Premier League era there have been hordes of transfer hits and misses, but here we're looking at those signings who proved game-changing for their club and the competition, the ones who really moved the needle. It gets somewhat lost in the cloudy narrative of the past, but Robinho had a decent first season at Manchester City, scoring on his Premier League debut and netting 14 times in 31 top-flight games to finish as their top scorer. Things went downhill from there, but Robinho's performance was less important than what his arrival meant for the future of English football.